JP5025772B2 - Stereoscopic glasses and stereoscopic video display system - Google Patents

Abstract

According to one embodiment, stereoscopic glasses include a first shutter (311), a second shutter (312), a receiver (32), and a controller (35). The first shutter (311) allows or hinders left eye vision. The second shutter (312) allows or hinders right eye vision. The receiver (32) receives a first control signal to open or close the first shutter (311) and a second control signal to open or close the second shutter (312) from a display device (10) that, in synchronization with display timing of a video signal for left eye and a video signal for right eye, displays the video signals. The controller (35) controls the first shutter (311) and the second shutter (312) to open or close based on the first control signal and the second control signal, respectively, while switching between stereoscopic view mode and planar view mode depending on the distance to the display device (10).

Description

Embodiments described herein relate generally to stereoscopic glasses and a stereoscopic video display system .

  2. Description of the Related Art Conventionally, there are stereoscopic video display devices such as television broadcast receivers that can provide a stereoscopic video to a user by using two types of video having parallax corresponding to the distance between both eyes. In such a stereoscopic video display device, for example, a right-eye video and a left-eye video are alternately displayed, and a left-eye shutter and a right-eye shutter provided in the stereoscopic glasses are displayed based on the display timing. By controlling the opening and closing of the image, the user wearing the stereoscopic glasses is made to recognize the stereoscopic video.

  Conventionally, in order to satisfactorily stereoscopically view a stereoscopic video image, a planar (two-dimensional) video image obtained by 2D conversion of the stereoscopic video image is displayed according to the user's current position (distance from the display screen) with respect to the display screen. Technology is known.

JP 2009-296118 A

  By the way, in the above prior art, since the stereoscopic video is switched to the planar video and displayed on the display device side, when a plurality of users wearing stereoscopic glasses are viewing the same display device, All users will watch the same video. However, in this case, since the user who is present at an appropriate position also appreciates the planar view video, further improvement is desired regarding the convenience of the user.

The present invention has been made in view of the above, and an object of the present invention is to provide stereoscopic glasses capable of switching and displaying a stereoscopic video and a planar video according to the viewing position of the stereoscopic video. And a stereoscopic video display system .

The stereoscopic glasses of the embodiment include first shielding means, second shielding means, receiving means, control means, and measuring means. The first shielding means opens or shields the left eye field of view. The second shielding means opens or shields the right eye field of view. The receiving means is a first control signal for opening and closing the first shielding means transmitted from the display device that displays the video signal in synchronization with the display timing of the video signal for the left eye and the video signal for the right eye. And a second control signal for opening and closing the second shielding means. The control means controls opening and closing of the first shielding means and the second shielding means based on the first control signal and the second control signal. The measuring means measures the distance between the display device and its own device. Furthermore, the control means synchronizes the opening and closing of the first shielding means and the second shielding means with the first control signal and the second control signal according to the distance measured by the measuring means, for stereoscopic viewing and for planar viewing. Switch to.

FIG. 1 is a diagram illustrating a configuration of a digital television broadcast receiver according to the first embodiment. FIG. 2 is a diagram illustrating a configuration of the synthesis processing unit illustrated in FIG. 1. FIG. 3 is a diagram illustrating a configuration of the stereoscopic glasses according to the first embodiment. FIG. 4 is a diagram for explaining the relationship between the video frame displayed on the digital television broadcast receiver and the liquid crystal shutter glasses. FIG. 5 is a flowchart illustrating a procedure of shutter control processing executed by the stereoscopic glasses according to the first embodiment. FIG. 6 is a diagram illustrating a configuration of a digital television broadcast receiver according to the second embodiment. FIG. 7 is a diagram schematically illustrating the external configuration of the stereoscopic glasses according to the second embodiment. FIG. 8 is a block diagram illustrating a configuration of stereoscopic glasses according to the second embodiment.

[First Embodiment]
FIG. 1 is a diagram illustrating a configuration of a digital television broadcast receiving apparatus (stereoscopic image display apparatus) according to the first embodiment. The digital television broadcast receiver 10 can perform video display based on a normal planar (two-dimensional) display video signal and video display based on a stereoscopic (three-dimensional) display video signal. It is a possible video display device.

  The digital television broadcast signal received by the antenna 11 is supplied to the tuner unit 12 via the input terminal 10a, so that a broadcast signal of a desired channel is selected. The broadcast signal selected by the tuner unit 12 is supplied to the demodulation / decoding unit 13 and restored to a digital video signal, audio signal, and the like, and then output to the signal processing unit 14.

  The signal processing unit 14 performs predetermined digital signal processing on the digital video signal and audio signal supplied from the demodulation / decoding unit 13. The predetermined digital signal processing performed by the signal processing unit 14 includes processing for converting a normal planar display video signal into a stereoscopic display video signal, or converting a stereoscopic display video signal into a planar display. The process of converting to a video signal is also included. Then, the signal processing unit 14 outputs a digital video signal to the synthesis processing unit 15 and outputs a digital audio signal to the audio processing unit 16.

  Among these, the synthesis processing unit 15 superimposes and outputs the OSD signal generated by the OSD (On Screen Display) signal generation unit 17 on the digital video signal supplied from the signal processing unit 14. In this case, if the video signal supplied from the signal processing unit 14 is a normal planar display video signal, the synthesis processing unit 15 directly uses the OSD signal supplied from the OSD signal generation unit 17 as the video signal. It is superimposed and output.

  In addition, when the video signal supplied from the signal processing unit 14 is a stereoscopic display video signal, the synthesis processing unit 15 responds to the OSD signal supplied from the OSD signal generation unit 17 as described in detail later. After the stereoscopic display signal processing corresponding to the input stereoscopic display video signal is performed, the OSD signal is superimposed on the input video signal and output.

  The digital video signal output from the synthesis processing unit 15 is supplied to the video processing unit 18. The video processing unit 18 converts the input digital video signal into an analog video signal in a format that can be displayed by a flat-type video display unit 19 having a liquid crystal display panel or the like at a subsequent stage. The analog video signal output from the video processing unit 18 is supplied to the video display unit 19 and used for video display.

  The main body side communication unit 20 is connected to the synthesis processing unit 15 and transmits left-eye shutter control signals and right-eye shutter control signals output from the eyeglass control unit 159 described later to each stereoscopic eyeglass 30. The communication method of the main body side communication unit 20 is not particularly limited, and for example, Bluetooth (registered trademark), infrared communication method, DLP-LINK (registered trademark) method, or the like can be used.

  Here, FIG. 2 is a diagram illustrating a configuration of the synthesis processing unit 15. The digital video signal output from the signal processing unit 14 is supplied to the video conversion unit 151 via the input terminal 15a. When the input video signal is a stereoscopic (three-dimensional) display video signal, the video conversion unit 151 converts the video signal into a specific video format, and the image quality control unit 152 and the parallax amount extraction unit 153. Is output.

  For video signals for stereoscopic display, a frame packing method in which a right-eye video frame is sent after a left-eye video frame within one frame synchronization period, or a right-eye video after a left-eye video line within one horizontal period There are various video formats such as a side-by-side system for sending out lines. Furthermore, among the various video formats, there are various video sizes, scanning methods (interlace / progressive), and the like.

  For this reason, in the present embodiment, the video conversion unit 151 performs a process such as a scaling process or an IP (Interlace / Progressive) conversion process on the input video signal for stereoscopic display, thereby obtaining a predetermined video. It is assumed that the video format is converted into a frame packing video format having a size (eg, 1920 pixels in the horizontal direction × 1080 lines in the vertical direction), and is output to the image quality control unit 152 and the parallax amount extraction unit 153 in synchronization with the vertical synchronization signal.

  Among these, the image quality control unit 152 performs image quality adjustment processing such as brightness adjustment, contrast adjustment, and hue adjustment based on the control of the control unit 22 on the input video signal, and synchronizes with the vertical synchronization signal. The data is output to the combining unit 154.

  In addition, the parallax amount extraction unit 153 performs the left-eye video frame and the right-eye video frame on the stereoscopic display video signal converted by the video conversion unit 151 into the frame packing video format. Are compared and the amount of parallax is extracted.

  This parallax amount extraction processing by the parallax amount extraction unit 153 is based on the position of the object displayed in the left-eye video frame as a reference, and the horizontal displacement of the same object displayed in the right-eye video frame is determined. This is done by indicating the number of pixels. This parallax amount extraction processing can be easily realized by using a motion vector technique for detecting the motion position of the same object displayed in successive frames. Specifically, numbers are assigned to pixels arranged in the horizontal direction on the screen from the left side to the right side, and the pixel number at a predetermined position of a certain object displayed in the left-eye video frame is By subtracting the number of the pixel at the same predetermined position of the object displayed in the eye video frame, the amount of parallax can be indicated by the number of pixels.

  In this case, when the parallax amount is a negative value, the right-eye image is present on the right side of the left-eye image, and the object is an image formed on the back side of the screen. When the parallax amount is a positive value, the right-eye image is present on the left side of the left-eye image, and the object is an image formed in front of the screen.

  Further, the parallax amount extraction unit 153 switches the value of the above-described parallax amount to a zero value in accordance with a control signal from the control unit 22 input via the input terminal 15b. Here, when the amount of parallax is zero, both the left-eye video and the right-eye video are in the same position, and the video is formed on the screen, that is, a planar (two-dimensional) video.

  Then, the parallax amount extracted by the parallax amount extraction unit 153 is supplied to the OSD position calculation unit 155. The OSD position calculation unit 155 performs calculation for correcting the display position when the OSD is stereoscopically displayed based on the input parallax amount, and outputs a parallax control signal indicating the calculation result.

  Specifically, the OSD position calculation unit 155 has a state in which the parallax amount extracted by the parallax amount extraction unit 153 does not change in the time axis direction or a video display state in which the parallax amount changes gently in the time axis direction In this case, a calculation for correcting the display position when the OSD is stereoscopically displayed is executed. That is, when the amount of parallax fluctuates violently in the time axis direction, the video is moving violently in the depth direction. In this state, the user is more conscious of the video, so the superimposed OSD is also in the depth direction. It is because it becomes unsightly if it moves violently. For this reason, the OSD position calculation unit 155 outputs a parallax control signal indicating a calculation result when the parallax amount is not fluctuating in a state where the parallax amount is fluctuating violently. Note that the display position is not corrected when the parallax amount is zero.

  Then, the parallax control signal output from the OSD position calculation unit 155 is supplied to the OSD stereoscopic conversion unit 156. The OSD signal output from the OSD signal generation unit 17 is supplied to the OSD stereoscopic conversion unit 156 via the input terminal 15c. Based on the parallax control signal, the OSD stereoscopic conversion unit 156 generates a left-eye OSD signal to be superimposed on the left-eye video frame and a right-eye OSD signal to be superimposed on the right-eye video frame from the input OSD signal. Are generated and output to the OSD buffer 157 for storage.

  Then, the video signal synthesized by the synthesizing unit 154 is supplied to the frame converting unit 158, where the vertical synchronization frequency is converted to double, that is, the frame frequency is doubled, and then the video processing is performed from the output terminal 15d. The image is output to the video display unit 19 via the unit 18. As a result, the video display unit 19 alternately displays the left-eye video frame and the right-eye video frame.

  Further, the frame synchronization signal generated by the frame conversion unit 158 is supplied to the glasses control unit 159. The spectacles control unit 159 generates left-eye and right-eye shutter control signals in synchronization with the frame synchronization signal supplied from the frame conversion unit 158, and performs stereoscopic viewing from the output terminal 15e via the main body side communication unit 20. Output to the eyeglasses 30.

  Returning to FIG. 1, the audio processing unit 16 converts the digital audio signal input from the signal processing unit 14 into an analog audio signal in a format that can be reproduced by the speaker 21 in the subsequent stage. The analog audio signal output from the audio processing unit 16 is supplied to the speaker 21 for audio reproduction.

  Here, in the digital television broadcast receiving apparatus 10, all of the operations including the various reception operations described above are comprehensively controlled by the control unit 22. The control unit 22 includes a CPU (Central Processing Unit) 22 a and receives operation information from the operation unit 23 installed in the main body of the digital television broadcast receiver 10 or sends it from the remote controller 40. The operation information received by the receiving unit 24 is received, and each unit is controlled so that the operation content is reflected.

  In this case, the control unit 22 uses the memory unit 22b. The memory unit 22b mainly includes a ROM (Read Only Memory) storing a control program executed by the CPU 22a, a RAM (Random Access Memory) for providing a work area to the CPU 22a, and various setting information and control information. And so on.

  In addition, a disk drive unit 25 is connected to the control unit 22. The disk drive unit 25 is a unit that allows an optical disk M such as a DVD (Digital Versatile Disk) to be detachable, and has a function of recording and reproducing digital data with respect to the mounted optical disk M.

  The control unit 22 encrypts the digital video signal and audio signal obtained from the demodulation / decoding unit 13 by the recording / playback processing unit 26 based on the operation of the operation unit 23 and the remote controller 40 by the user, and performs predetermined recording. After being converted into the format, it can be controlled to be supplied to the disk drive unit 25 and recorded on the optical disk M.

  Further, the control unit 22 causes the disc drive unit 25 to read out digital video signals and audio signals from the optical disc M based on the operation of the operation unit 23 and the remote controller 40 by the user, and the recording / playback processing unit 26 decodes them. Then, by supplying the signal to the signal processing unit 14, it can be controlled to be used for the video display and the audio reproduction described above.

  Further, an HDD (Hard Disk Drive) 27 is connected to the control unit 22. The control unit 22 encrypts the digital video signal and audio signal obtained from the demodulation / decoding unit 13 by the recording / playback processing unit 26 based on the operation of the operation unit 23 or the remote controller 40 by the user into a predetermined recording format. After the conversion, it can be controlled to record in the HDD 27.

  Further, the control unit 22 reads out the digital video signal and audio signal from the HDD 27 based on the operation of the operation unit 23 and the remote controller 40 by the user, and after decoding by the recording / playback processing unit 26, the signal processing is performed. By supplying to the unit 14, it can be controlled to be used for the video display and audio reproduction described above.

  Furthermore, an input terminal 10b is connected to the digital television broadcast receiver 10. The input terminal 10b is used to directly input digital video signals and audio signals from the outside of the digital television broadcast receiver 10. The digital video signal and audio signal input through the input terminal 10b are supplied to the signal processing unit 14 through the recording / reproduction processing unit 26 based on the control of the control unit 22, and thereafter the above-mentioned For video display and audio playback.

  Further, the digital video signal and audio signal input through the input terminal 10 b are transmitted to the optical disc M by the disc drive unit 25 after passing through the recording / playback processing unit 26 based on the control of the control unit 22. Are used for recording and reproduction of data and for recording and reproduction on the HDD 27.

  The control unit 22 sends digital video signals and audio signals recorded on the optical disc M to the HDD 27 between the disc drive unit 25 and the HDD 27 based on the operation of the operation unit 23 and the remote controller 40 by the user. It also controls recording and recording of digital video signals and audio signals recorded on the HDD 27 onto the optical disc M.

  A network interface 28 is connected to the control unit 22. This network interface 28 is connected to an external network N. The network interface 28 communicates with an external device (not shown) via the network N. For this reason, the control unit 22 can use the service provided there by accessing an external device connected to the network N via the network interface 28 to perform information communication. .

  Next, the stereoscopic glasses 30 will be described with reference to FIG. FIG. 3 is a diagram illustrating a configuration of the stereoscopic glasses 30 according to the present embodiment. As shown in the figure, the stereoscopic glasses 30 include liquid crystal shutter glasses 31, a glasses-side communication unit 32, a measurement unit 33, and a shutter drive unit 34.

  The liquid crystal shutter glasses 31 include a left eye liquid crystal shutter (L shutter) 311 for opening or shielding the left eye field of view and a right eye liquid crystal shutter (R shutter) 312 for opening or shielding the right eye field of view. Have. The viewer wears the liquid crystal shutter glasses 31 and perceives stereoscopic vision by alternately viewing the left-eye image and the right-eye image alternately displayed with the left eye and the right eye. To do.

  The eyeglass-side communication unit 32 is a receiving device corresponding to the transmission method of the main body-side communication unit 20, and the left-eye shutter and the right-eye shutter transmitted from the main body-side communication unit 20 of the digital television broadcast receiver 10. A control signal is received.

  The measuring unit 33 measures the distance between the stereoscopic glasses 30 and the digital television broadcast receiver 10 (video display unit 19), and outputs a distance signal representing this distance to the shutter control unit 35. Here, the method for measuring the distance between the stereoscopic glasses 30 and the digital television broadcast receiver 10 is not particularly limited, and publicly known and publicly available techniques can be used. For example, when the shutter control signal is transmitted by infrared communication, a digital television broadcast is received from the stereoscopic glasses 30 based on the strength (intensity) of the reception sensitivity with which the glasses-side communication unit 32 receives the shutter control signal. The distance to the device 10 may be measured. Moreover, it is good also as a form with which the measurement part 33 comprises the structure which implement | achieves the TOF system which irradiates a light pulse toward the digital television broadcast receiver 10, and measures the time until reception of the reflected light.

  The shutter drive unit 34 opens and closes the L shutter 311 and the R shutter 312 in accordance with a control signal input from the shutter control unit 35, thereby transmitting a video (light) displayed on the digital television broadcast receiver 10. Realize the opaque state.

  The shutter control unit 35 includes a CPU 35 a and controls opening and closing of the L shutter 311 and the R shutter 312 based on the left eye and right eye shutter control signals input from the eyeglass side communication unit 32. In addition, the shutter control unit 35 controls the opening and closing of the L shutter 311 and the R shutter 312 by switching between stereoscopic viewing and planar viewing according to the distance signal input from the measuring unit 33. In this case, the shutter control unit 35 uses the memory unit 35b. The memory unit 35b mainly includes a ROM that stores a control program executed by the CPU 35a, a RAM that provides a work area to the CPU 35a, and a nonvolatile memory that stores various setting information and control information. is doing.

  Specifically, the shutter control unit 35 includes a distance represented by the distance signal, that is, a distance between the stereoscopic glasses 30 and the digital television broadcast receiver 10 in a predetermined range (hereinafter referred to as a stereoscopic viewable range). In this case, a drive signal for alternately opening and closing the L shutter 311 and the R shutter 312 is output to the shutter drive unit 34 in synchronization with the left eye and right eye shutter control signals input from the glasses side communication unit 32. To do. Hereinafter, this drive signal output operation is referred to as a stereoscopic viewing mode.

  The shutter control unit 35 outputs the drive signal in the above-described stereoscopic viewing mode, so that the left shutter 311 is opened when the left-eye video frame is displayed on the digital television broadcast receiving apparatus 10. And the closed state of the R shutter 312, and when the right-eye video frame is displayed on the digital television broadcast receiver 10, the closed state of the L shutter 311 and the open state of the R shutter 312 are realized. .

  Further, the shutter control unit 35 has a distance represented by the distance signal, that is, a distance between the stereoscopic glasses 30 and the digital television broadcast receiving apparatus 10 outside the above-described stereoscopic viewable range (hereinafter, referred to as “stereoscopic impossible range”). In this case, in synchronization with the left-eye or right-eye shutter control signal input from the glasses-side communication unit 32, a drive signal for simultaneously opening and closing the L shutter 311 and the R shutter 312 is output to the shutter drive unit 34. . Hereinafter, this drive signal output operation is referred to as a planar view mode.

  Then, the shutter control unit 35 outputs the drive signal in the above-described planar view mode, so that the left-eye video frame (or the right-eye video frame) is displayed on the digital television broadcast receiver 10. In addition, when the L shutter 311 and the R shutter 312 are opened, and the right eye video frame (or the left eye video frame) is displayed on the digital television broadcast receiver 10, the L shutter 311 and the R shutter 311 are displayed. The closed state of the shutter 312 is realized.

  Here, the operation of the shutter control unit 35 will be described with reference to FIG. FIG. 4 is a diagram for explaining the relationship between the video signal (frame) displayed on the digital television broadcast receiver 10 and the liquid crystal shutter glasses 31.

  In FIG. 4, the video signal P is displayed on the video display unit 19 of the digital television broadcast receiver 10. Here, the left-eye video L represents the left-eye video signal P, and the right-eye video R represents the right-eye video signal P. As shown in the figure, the left-eye video L and the right-eye video R are alternately displayed for each frame. The figure shows an example in which eight video frames are displayed in the order of (1) to (8) from the left to the right in the figure.

  The symbols L and R shown on the L shutter 311 and the R shutter 312 of the liquid crystal shutter glasses 31 indicate the left eye image L and the right eye image R that can be viewed by opening the L shutter 311 and / or the R shutter 312. Means. Further, (1) to (8) shown in the upper part of the liquid crystal shutter glasses 31 correspond to (1) to (8) attached to the left-eye video L and the right-eye video R, and the same numbered video. Represents the open / closed state of the L shutter 311 and the R shutter 312 when is displayed on the video display unit 19.

  In FIG. 4, the distance indicates the distance between the digital television broadcast receiver 10 and the main body side communication unit 20. Here, the distance D0 corresponds to the display position (display surface) on the digital television broadcast receiver 10, and the separation distance increases in the order of D0 <D1 <D2. In the drawing, an example is shown in which the range of distances D0 to D1 is set to the above-described stereoscopically disabled range and the range of distances D1 to D2 is set to the stereoscopically visible range. The stereoscopic non-viewable range is determined based on a viewing distance that places a burden on the eyes when viewing a stereoscopic video, and the stereoscopic viewable range is determined when viewing a stereoscopic video. It is assumed that it is determined based on an appropriate viewing distance that does not impose a burden.

  When the distance represented by the distance signal is included in the stereoscopic view possible range (distances D1 to D2), the shutter control unit 35 switches to the stereoscopic viewing mode and outputs a drive signal to the shutter drive unit 34. Thus, when the left eye video L is displayed, the L shutter 311 is opened and the R shutter 312 is closed. Further, when the right-eye video R is displayed, the L shutter 311 is closed and the R shutter 312 is opened. Therefore, the user wearing the stereoscopic glasses 30 sees the left-eye video L with the left eye and the right-eye video R with the right eye, and as a result, the user uses the left-eye video L and the right-eye video. The stereoscopic video represented by the video R is recognized.

  In addition, when the distance represented by the distance signal is included in the stereoscopic view impossible range (distances D0 to D1), the shutter control unit 35 switches to the planar view mode and outputs a drive signal to the shutter drive unit 34. As a result, the L shutter 311 and the R shutter 312 are opened when the left eye image L is displayed, and the L shutter 311 and the R shutter 312 are closed when the right eye image R is displayed. It becomes a state. Therefore, the user wearing the stereoscopic glasses 30 sees only the left-eye video L with both eyes, and as a result, recognizes the planar video represented by the left-eye video L.

  As described above, the shutter control unit 35 switches the display between the stereoscopic video and the planar video according to the distance between the stereoscopic glasses 30 and the digital television broadcast receiver 10. As a result, when the user wearing the stereoscopic glasses 30 is positioned at a distance (stereoscopic impossible distance) that places a burden on the eyes when viewing the stereoscopic video, the stereoscopic video is provided to the user. Therefore, the load on the user's eyes can be reduced.

  In the example of FIG. 4, the left-eye image L is viewed with both eyes in the stereoscopic vision impossible range (distance D0 to D1). However, the present invention is not limited thereto, and the right-eye image R is viewed with both eyes. It is good also as a form made to do.

  Hereinafter, the operation of the stereoscopic glasses 30 of the present embodiment will be described with reference to FIG. Here, FIG. 5 is a flowchart showing a procedure of a shutter control process executed by the shutter control unit 35 of the stereoscopic glasses 30. As a premise of this processing, it is assumed that a stereoscopic video is displayed on the video display unit 19 of the digital television broadcast receiver 10.

  First, the shutter control unit 35 of the stereoscopic glasses 30 determines whether or not the distance from the digital television broadcast receiver 10 measured by the measurement unit 33 is included in the stereoscopic viewable range (step). S11).

  Here, when it determines with it being included in the stereoscopic view possible range (step S11; Yes), the shutter control part 35 operate | moves in the stereoscopic use mode, and is for the left eye and right input from the spectacles side communication part 32. In synchronization with the eye shutter control signal, a stereoscopic driving signal for alternately opening and closing the L shutter 311 and the R shutter 312 is output to the shutter driving unit 34 (step S12), and the process returns to step S11 again.

  On the other hand, when it is determined in step S11 that the distance to the digital television broadcast receiving device 10 measured by the measurement unit 33 is included in the stereoscopic view unacceptable range (step S11; No), the shutter control unit 35 performs planar view. Drive signal for planar view that simultaneously opens and closes the L shutter 311 and the R shutter 312 in synchronization with the left-eye or right-eye shutter control signal input from the eyeglass-side communication unit 32. Is output to the shutter drive unit 34 (step S13), and the process returns to step S11.

  Then, while the stereoscopic video is displayed on the digital television broadcast receiver 10, the shutter control unit 35 repeatedly executes the processes of steps S <b> 11 to S <b> 13 described above, so that the position of its own device, i.e., the stereoscopic video is displayed. The stereoscopic viewing mode and the planar viewing mode are switched according to the viewing position.

  As described above, according to the present embodiment, in each of the stereoscopic glasses 30, the distance between the own device (stereoscopic glasses 30) and the digital television broadcast receiver 10 (video display unit 19). , And the opening / closing method of the liquid crystal shutter glasses 31 is changed in accordance with the measured distance, and the display form of the image that can be viewed is switched between stereoscopic viewing and planar viewing. Thereby, according to the viewing position of the stereoscopic video image, that is, the position where each of the glasses for stereoscopic viewing 30 is present, it is possible to allow the user to view the video having a display form suitable for the position. In addition, even when a plurality of users are viewing the same stereoscopic video, only a user who is approaching the display screen can switch to a planar video, which affects other users. In addition, the load on the eyes of the user approaching the display screen can be reduced.

[Second Embodiment]
Next, a second embodiment will be described. In the first embodiment, the mode in which the measurement unit 33 of the stereoscopic glasses 30 measures the distance between the digital television broadcast receiver 10 and each stereoscopic glasses 30 has been described. In the second embodiment, the distance between the digital television broadcast receiver 10 and each of the stereoscopic glasses 30 is measured by the digital television broadcast receiver 10, and the measured distance is assigned to each of the stereoscopic glasses 30. The form to provide is demonstrated. In addition, about the component similar to 1st Embodiment mentioned above, the same code | symbol is provided and description is abbreviate | omitted.

  FIG. 6 is a diagram illustrating a configuration of a digital television broadcast receiver according to the second embodiment. As shown in FIG. 6, the digital television broadcast receiver 50 includes an imaging unit 51 and a measurement unit 52 in addition to the configuration of FIG. 1 described above. Note that the main body side communication unit 20 of the present embodiment performs communication using a communication method such as Bluetooth (registered trademark) that can communicate with each of the stereoscopic glasses 30 individually.

  The imaging unit 51 is an image sensor such as a CCD or CMOS provided in the vicinity of the video display unit 19. The imaging unit 51 captures an image of a user facing the digital television broadcast receiver 50 and outputs the captured image to the measurement unit 52. To do.

  The measurement unit 52 detects an index 60a (described later) attached to the stereoscopic glasses 30 worn by the user from the captured image captured by the imaging unit 51, and the size of the index 60a to the stereoscopic glasses 30 is detected. Measure distance. Specifically, the measurement unit 52 uses the index 60a detected in the captured image based on a table in which the size of each index 60a attached to each stereoscopic eyeglass 30 is associated with the separation distance from the video display unit 19. The distance to the video display unit 19 of the stereoscopic eyeglasses 30 to which the index 60a is attached is specified from the size of.

  Here, FIG. 7 is a diagram schematically illustrating an external configuration of the stereoscopic glasses according to the second embodiment. As shown in the figure, an index 60a is attached to the stereoscopic glasses 60 used in the present embodiment. Here, the index 60a is assigned a unique shape or symbol for each stereoscopic eyeglass 60, and each stereoscopic eyeglass 60 can be identified based on the index 60a. 7 shows an example in which the indexes 60a are attached to the four corners of the stereoscopic glasses 60, but the positions and the number of the indexes 60a are not limited thereto. In the present embodiment, the distance to each stereoscopic eyeglass 60 is measured using the index 60a. However, the present invention is not limited to this, and each stereoscopic eyeglass 60 is similar to the first embodiment. It is good also as a form which measures based on the strength (intensity) of the receiving sensitivity at the time of communication with, and it is good also as a form which measures by another well-known method.

  Further, the measurement unit 52 causes the main body side communication unit 20 to transmit a distance signal representing the measured distance together with the shutter control signal output from the spectacles control unit 159. Note that the measurement unit 52 transmits a distance signal corresponding to the stereoscopic glasses 30 from the main body side communication unit 20 to the stereoscopic glasses 30 identified from the type of the index 60a. Thereby, the distance to the digital television broadcast receiver 50 is individually notified to each of the stereoscopic glasses 30.

  FIG. 8 is a block diagram illustrating a configuration of stereoscopic glasses according to the second embodiment. As shown in the figure, the stereoscopic glasses 60 include liquid crystal shutter glasses 31, glasses-side communication units 32, a shutter drive unit 34, and a shutter control unit 61.

  The shutter control unit 61 of the stereoscopic glasses 60 includes a CPU 35a and a memory unit 35b, similar to the shutter control unit 35 of the first embodiment. The shutter control unit 61 controls the opening and closing of the L shutter 311 and the R shutter 312 based on the left eye and right eye shutter control signals input from the eyeglass side communication unit 32. In addition, the shutter control unit 61 controls opening and closing of the L shutter 311 and the R shutter 312 for stereoscopic viewing and planar viewing according to the distance signal input from the glasses side communication unit 32.

  Specifically, when the distance represented by the distance signal, that is, the distance between the stereoscopic glasses 30 and the digital television broadcast receiver 50, is within the stereoscopic viewable range, the shutter control unit 61 starts from the glasses side communication unit 32. A drive signal for alternately opening and closing the L shutter 311 and the R shutter 312 is output to the shutter drive unit 34 in synchronization with the input left eye and right eye shutter control signals (stereoscopic mode).

  In addition, the shutter control unit 61 receives the distance represented by the distance signal, that is, when the distance between the stereoscopic vision glasses 30 and the digital television broadcast receiving apparatus 10 is included in the stereoscopic vision unacceptable range, from the glasses side communication unit 32. In synchronization with the left-eye or right-eye shutter control signal input, a drive signal for simultaneously opening and closing the L shutter 311 and the R shutter 312 is output to the shutter drive unit 34 (planar view mode). The operation of the shutter control unit 61 related to the shutter control is the same as that of the shutter control unit 35 described with reference to FIG.

  As described above, according to the present embodiment, the distance between the stereoscopic glasses 60 (video display unit 19) and each of the stereoscopic glasses 60 is measured on the digital television broadcast receiver 50 side. The measured distance is transmitted to each stereoscopic eyeglass 60. In the stereoscopic glasses 60, the distance between the own device (stereoscopic glasses 60) transmitted from the digital television broadcast receiver 50 and the digital television broadcast receiver 50 (video display unit 19) is set. In response, the opening / closing method of the liquid crystal shutter glasses 31 is changed to switch the display mode of the viewable video between stereoscopic viewing and planar viewing.

  Thus, according to the viewing position of the stereoscopic video, that is, the position where each of the stereoscopic glasses 60 is present, it is possible to allow the user to view a video having a display form suitable for the position. In addition, even when a plurality of users are viewing the same stereoscopic video, only a user who is approaching the display screen can switch to a planar video, which affects other users. In addition, the load on the eyes of the user approaching the display screen can be reduced. Further, since the measurement unit 33 can be removed as compared with the configuration of the stereoscopic glasses 30 described above, the configuration of the stereoscopic glasses can be simplified.

  Although the first and second embodiments have been described above, the present invention is not limited to the above-described embodiments as they are, and in the implementation stage, the constituent elements are modified and embodied without departing from the scope of the invention. be able to. Further, various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the above embodiments. For example, some components may be deleted from all the components shown in the embodiment. Furthermore, constituent elements over different embodiments may be appropriately combined.

  For example, in the above-described embodiment, an example in which the present invention is applied to a liquid crystal shutter-type stereoscopic image display apparatus and stereoscopic glasses has been described. However, the present invention is not limited to this, and the field of view of the user's left eye and right eye is individually As long as the method can be opened or shielded, the present invention may be applied to other types of stereoscopic video display devices and stereoscopic glasses.

DESCRIPTION OF SYMBOLS 10 Digital television broadcast receiver 11 Antenna 12 Tuner part 13 Demodulation decoding part 14 Signal processing part 15 Composition processing part 151 Image | video conversion part 152 Image quality control part 153 Parallax amount extraction part 154 Composition part 155 OSD position calculation part 156 OSD three-dimensional conversion part 157 OSD buffer 158 Frame conversion unit 159 Glasses control unit 16 Audio processing unit 17 OSD signal generation unit 18 Video processing unit 19 Video display unit 20 Main body side communication unit 21 Speaker 22 Control unit 23 Operation unit 24 Reception unit 25 Disk drive unit 26 Recording Reproduction processing unit 27 HDD
28 Network Interface 30 Stereoscopic Glasses 31 Liquid Crystal Shutter Glasses 311 L Shutter 312 R Shutter 32 Eyeglass Side Communication Unit 33 Measurement Unit 34 Shutter Drive Unit 35 Shutter Control Unit 40 Remote Controller 50 Digital Television Broadcast Receiver 51 Imaging Unit 52 Measurement Unit 60 Stereoscopic glasses 61 Shutter controller

Claims (4)

First shielding means for opening or shielding the left eye field of view;
A second shielding means for opening or shielding the right eye field of view;
A first control signal for opening and closing the first shielding means transmitted from a display device that displays the video signal in synchronization with the display timing of the video signal for the left eye and the video signal for the right eye; Receiving means for receiving a second control signal for opening and closing the second shielding means;
Control means for controlling opening and closing of the first shielding means and the second shielding means based on the first control signal and the second control signal;
Measuring means for measuring the distance between the display device and its own device;
With
The control means is for stereoscopic viewing in synchronization with the first control signal and the second control signal to open and close the first shielding means and the second shielding means according to the distance measured by the measuring means. And stereoscopic viewing glasses. The control means includes
When the distance between the display device and its own device is within a predetermined stereoscopic view possible range, the first shielding signal and the second shielding signal are used as the first shielding signal and the second shielding signal. Switch to stereoscopic viewing that opens and closes in synchronization with
When the distance between the display device and its own device is outside the stereoscopic viewable range , the first shielding means and the second shielding means are synchronized with the first control signal and the second control signal. The stereoscopic glasses according to claim 1, wherein the stereoscopic glasses are switched to a plan view that is simultaneously opened and closed.   The measuring means measures the distance between the display device and its own device based on the strengths of the first control signal and the second control signal received by the receiving means. The stereoscopic eyeglasses according to 1. A stereoscopic video display system having a stereoscopic video display device and stereoscopic glasses,
The stereoscopic video display device includes:
Display control means for alternately displaying a video signal for the left eye and a video signal for the right eye on the display device;
A first control signal is transmitted to the stereoscopic glasses in synchronization with the display timing of the left-eye video signal, and a second control signal is transmitted in synchronization with the display timing of the right-eye video signal. Transmitting means for transmitting to the viewing glasses;
With
The stereoscopic glasses are
First shielding means for opening or shielding the left eye field of view;
A second shielding means for opening or shielding the right eye field of view;
Receiving means for receiving the first control signal and the second control signal;
Control means for controlling opening and closing of the first shielding means and the second shielding means based on the first control signal and the second control signal;
Measuring means for measuring the distance between the display device and its own device;
With
The control means is for stereoscopic viewing in synchronization with the first control signal and the second control signal to open and close the first shielding means and the second shielding means according to the distance measured by the measuring means. And a stereoscopic image display system characterized in that the display is switched to a plan view.

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